161663676259992 has 16 divisors (see below), whose sum is σ = 404159190650040. Its totient is φ = 53887892086656.

The previous prime is 161663676259991. The next prime is 161663676259997. The reversal of 161663676259992 is 299952676366161.

It is a super-2 number, since 2×161663676259992² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161663676259991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367993255393 + ... + 3367993255440.

Almost surely, 2^{161663676259992} is an apocalyptic number.

161663676259992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161663676259992 is an abundant number, since it is smaller than the sum of its proper divisors (242495514390048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161663676259992 is a wasteful number, since it uses less digits than its factorization.

161663676259992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6735986510842 (or 6735986510838 counting only the distinct ones).

The product of its digits is 2380855680, while the sum is 78.

The spelling of 161663676259992 in words is "one hundred sixty-one trillion, six hundred sixty-three billion, six hundred seventy-six million, two hundred fifty-nine thousand, nine hundred ninety-two".